数控螺旋锥齿轮磨齿机机床加工误差补偿  

Compensation of Machining Errors of CNC Spiral Bevel Gear Grinding Machine

作　　者：王志永[1] 于水琴[1] 曾韬[1] 

机构地区：[1]中南大学机电工程学院,长沙410075

出　　处：《农业机械学报》2009年第1期222-226,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家重点基础研究发展计划(973计划)资助项目(2005CB724100)

摘　　要：根据螺旋锥齿轮齿面的数学模型,对轮齿曲面进行了离散化处理。运用矢量运算的方法,给出了齿面离散点径矢及其法矢的计算方法。基于螺旋锥齿轮切齿计算得到的比例修正参数以及砂轮可任意修形的特点,建立了一种基于比例修正参数和砂轮参数,对机床加工误差进行补偿的方法,运用最优化算法可得到各种比例修正参数的修正倍数以及砂轮参数的改变量。通过实际的磨齿加工、齿形误差的测量以及机床调整参数的补偿,验证了机床加工误差补偿方法的正确性。A method for improving machining precision of CNC spiral bevel gear grinding machine was investigated. The tooth surface of spiral bevel gears was discretized and a method for calculating the position vector and normal vector of discrete points was developed according to the mathematical model of the tooth surface. The relation between proportional change parameters and tooth form errors caused by machining errors was analyzed. Based on the proportional change parameters obtained from machine settings calculation and freewill modification characteristics of grinding wheel, a method for compensating machining errors was proposed. By applying optimization algorithm, the coefficients of proportional change parameters and the variation of grinding wheel parameters were computed. The proposed method was validated via practical machining on YK20100 grinding machine and inspecting on M＆M Sigma 7 gear measuring instrument. The results show that this method can reduce the tooth form errors within 5.4μm.

关 键 词：螺旋锥齿轮 磨齿机 加工误差 误差补偿 

分 类 号：TH161.5[机械工程—机械制造及自动化] TH132.421